asedeno.scripts.mit.edu Git - linux.git/commit

author	Amelie Delaunay <amelie.delaunay@st.com>
	Thu, 12 Jan 2017 15:09:44 +0000 (16:09 +0100)
committer	Felipe Balbi <felipe.balbi@linux.intel.com>
	Mon, 16 Jan 2017 09:11:17 +0000 (11:11 +0200)
commit	ca02954ada711b08e5b0d84590a631fd63ed39f9
tree	169f5eda24a4e53c7af7c596b1ba254f79c29654	tree \| snapshot
parent	32856eea7bf75dfb99b955ada6e147f553a11366	commit \| diff

usb: dwc2: gadget: Fix GUSBCFG.USBTRDTIM value

USBTrdTim must be programmed to 0x5 when phy has a UTMI+ 16-bit wide
interface or 0x9 when it has a 8-bit wide interface.
GUSBCFG reset value (Value After Reset: 0x1400) sets USBTrdTim to 0x5.
In case of 8-bit UTMI+, without clearing GUSBCFG.USBTRDTIM mask, USBTrdTim
results in 0xD (0x5 | 0x9).
That's why we need to clear GUSBCFG.USBTRDTIM mask before setting USBTrdTim
value, to ensure USBTrdTim is correctly set in case of 8-bit UTMI+.

Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>